Agreeing with those above who say to start with a fresh or unbored 4 bolt block. My perference is for a one that has been run but does not need to be bored (granted it's an unlikely find) so that any shifting will have already taken place.

You might want to have the new block "posted" so that it can take a little more punishment. It doesn't cost much and is therefore cheap insurance.

Which supercharger(s) are you planning to run and are you going to intercool it?


Abe